<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <fieldset id="form-gra-time">
        <legend>请选择日期粒度：</legend>
        <label>日<input name="gra-time" value="day" type="radio" checked="checked"></label>
        <label>周<input name="gra-time" value="week" type="radio"></label>
        <label>月<input name="gra-time" value="month" type="radio"></label>
    </fieldset>

    <fieldset>
        <legend>请选择查看的城市：</legend>
        <select id="city-select">
            <option>北京</option>
        </select>
    </fieldset>

    <div class="aqi-chart-wrap">
    </div>
    <script src="任务十七.js"></script>
</body>

</html>